1Z is still not working correctly

Hello,

My Golf 3 1Z still isn't reaching its maximum speed.
I posted something last year and received some helpful tips.

I tried the following:

Ulf pull-through test: approximately 1 second too slow (this might also be due to calculation errors, as I don't know the exact weight and have only estimated it).
Lmm swapped.
Diesel filter replaced.
The lines from the filter to the engine have been replaced, and now there are no more air bubbles.
Error memory is empty.
Air filter replaced (sports air filter).
This magnetic valve, which is located on the driver's side fender, has been replaced.

I thought maybe he was going a little faster with winter diesel. But according to the speedometer, he's doing about 180 km/h (172 km/h according to GPS), but it feels very sluggish, and that's only when I'm driving alone. Up to 160 km/h, it accelerates properly.

Regarding the acceleration, I think it's perfectly fine. A friend of mine with a Golf that has a 1.0-liter engine accelerates from traffic lights at roughly the same speed/pace.
Sometimes, when shifting from first to second gear, there's a brief squeaking sound. However, there is plenty of torque (185 size summer tires).

What else can I try?

Should I stop using Agr?
Can Kat be temporarily disassembled?

Thank you in advance for the tips.

Sure, here's the translation:

'One more question, please.'

While I was driving home, I was just able to enjoy driving in the slipstream of a VW T4 for a while. YAYYYYY he's going over 190 km/h, but only in the slipstream .

What I noticed was that sparks were flying from my rear window, not many, but it was clearly visible when no one was behind me.
Where do they come from? Isn't that unusual?

'Furthermore, my engine always sounds very smooth after running for 30 minutes.' He's left his days of reckless highway driving behind him. He no longer revs the engine unnecessarily, and hardly does it at all when the car is stationary.

If he manages to achieve a score of 190-200 on his own now, I would be really satisfied.


Here's one more addition:

Whether I press the accelerator pedal all the way down or only 2/3, it doesn't seem to matter. Does this mean that my engine receives the same amount of diesel at 2/3 throttle as it does with full throttle, or does the difference simply not result in any additional power?

Hi.

Currently, there is a technical article available about finding the lost performance using VAGCOM.

Please work through this "little bit" , and then we can see what happens next .

[Translating...]danke, den Artikel hab ich gefunden.
allerdings hab ich kein funktionierenden Adapter im moment.
mit meinem verlier ich irgendwie die Verbindung.

[Translating...]

G3TDI wrote:

danke, den Artikel hab ich gefunden. allerdings hab ich kein funktionierenden Adapter im moment. mit meinem verlier ich irgendwie die Verbindung.

Hi

was für ein Baujahr ist Dein Wagen, und welchen Adapter benutzt Du?

[Translating...]Mein wagen ist baujahr ende 95
adapter ist selbstgebaut , anleitung war hier auf der seite mal verlinkt.
Auf jeden fall so einer mit optokoppler

[Translating...]

G3TDI wrote:

Mein wagen ist baujahr ende 95 adapter ist selbstgebaut , anleitung war hier auf der seite mal verlinkt. Auf jeden fall so einer mit optokoppler

Hi

das wird dann einer meiner früheren Entwürfe gewesen sein.

Mittlerweile gibts hier verbesserte Schaltungen und auch Tips für ältere Problemadapter --> Diagnose-Fachartikel